Actuating and reversing mechanism for pumps.



J. P. ULDEHUP.

AfiTUATING AND REVERSING MECHANISM FOR PUMPS.

APPLICATION man APR.21. um.

1,275,800. Patented Aug. 13, 1918.

2 SHfETS-SHEET I.

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J. P. ULDERUP. I

ACTUATING AND REVERSINGMECHANISM FOR PUMPS.

APPLICATION FILED APR. 27. I917. 1,,Q75,800. Patented Aug. 13, 1918.

2 SHEETS-SHEET 2.

WIT-M58859 I JP J/NVENTOR L 75 #44 A TTORNEYS NITED STATES PATENT ICE.

JOHANNES P. ULDERUF, 013 NEW YORK, N. Y.

To all whom it may concern Be it known that I, J OHANNES P. ULDERUP, a subject of the German Emperor, and a resident of the city of New York, Jamaica, borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Actuating and Reversing Mechanism for Pumps, of which the following is a full, clear, and exact description.

The invention relates to internal combustion engines using liquid fuel for the motive agent, and its object is to provide a new and improved actuating and reversing mechanism for the pump to insure an accurate functioning of the pump for the latter to deliver liquid fuel to the working chamber of the engine, and arranged to permit convenient reversing of the engine whenever it is desired to doso. Another object is to use the actuating and reversing mechanism "for maintaining a uniform speedof the engine.

In order to accomplish the desired result,

use ismade of a main feed pump adapted to supply an engine cylinder with fuel to periodically effect the explosions during normal running of the engine, a reversing pump adapted to supply the said engine cylinder with fuel to effect an explosion for reversing the engine, independent actuating mechanisms driven from rotatable parts of the engine, one for actuating the said main feed pump and the other the said reversingpump, and connecting mechanism connected with both actuating mechanisms and under the control of an operator to temporarily throw the actuating mechanism for. the main feed pump out of action and simultaneously throw the actuating mechanism for the reversing pump temporarily into action.

A practical embodiment of the invention isrepresented in the accompanyingdrawings forn'iing a part ofthis specification, in which similar characters of reference indicate corresponding parts in all theviews.

Figure l is a sideelevation of the actuatingmechanism as applied to a two-cylinder internal combustion engine, parts being shownfin section and parts being shown broken out; a

Fig. 2 is a cross section of the same onthe line 2-2 of Fig. 1; a i y Fig. 3 is a sectional planview of the same on the line 3+3 of Fig.1; y

Fig. 4: is an enlarged sectional plan view of a portion of the reversing mechanism for the bers of the cylinders. of the plungei's 14c and15 are adapted to be Specification of Letters Patent. yatentod Aug. 13, 1918 Applicationfiled Apri127,1917; Serial No; 164,912. 3

side elevation of the line ,6-6 of Fig. 3 and withthe parts in different position; and

Fig. 7 is a sectional side elevation of the clutch mechanism connecting the eccentric of the reversing pump with its driving shaft, the section being on the line 7-7 of1*ig. 3.

f The actuating and reversing mechanism,

as shown inthe drawings, is designed for a two-cylinder internal combustion eng111e,and

for this purpose use ismadeof two pumps 10 and 11 one for each cyhnder, to pumphquid fuel periodically into the cylinders with a view to effect explosions for normalrunning p The pumps 10 and 11 are mounted on a bracketl2 attached to the of the engine.

engine frame 13, and the pumps areprovided with spring-pressed plungers 14 and 15 for pumping liquid fuelinto the working cham- The lower outer ends alternately engaged by arms16 and 17 for im aarting an upward movement to the plungers against the tensions of the springs there of toforce the liquid fuel into the engine. cylii'iders. The arms 16 and 17 are pivoted at 18 and 19 on the free ends of a two-armed lever 20 mounted to swing on a stud 21atj tached to a bracket 22 secured to the engine frame 13, plainly shown in Fig. One arm of the lever 20 is provided with a gu1deway 22 in which is mounted to slide a block 23 pivotally connected wlthan eccentric rod 16 and 17 alternately actuate the plungers 145 and 15 to pump theliquid fuel into the engine cylinders. i i i The amount of liquid pumped by the pumps 10 and 11 into the cylinder can be regulated by varying the throw given to the lever 20 and consequently varying the throw given to the plunger 14 and 15. For thepurpose mentioned, the eccentric rod 24 is pivotally connectedwithan eccentric rod 30 of an eccentric 31 having its shaft 32 journaled on the engine frame 13, and the eccentric 31 is provided with a suitable handle 33 under the control of the operator for varyingthe pcsition of the eccentric 31 with a View to vary the position of the eccentric rod24 and coni sequently that of the block 23 for moving.

the latter nearer to or farther from the pivot 21 thus varying the throw of the lever 20 correspondingly without change in the eccentric 25. It is understood that when the block "23 is moved nearer the pivot 21 the throw of the plunger-s 14 and 15 is reduced and consequently less fuel is pumped into the engine cylinders, and when the block 28 is moved farther' away from the pivot 21 then the throw of the plungers 1t and 15 is increased to increase the amount of liquid fuel pumped into the cylinders.

In order to hold the arms 16 and 17 in axial alinement with the plungers 1 1 and 15 duringthe time of pushing the plunger-s upward, the following arrangement is made: The arms 16 and 17 are pivotally connected 7 by links 4:0 and41 with a pivot 42 mounted or formed on a crosshead 43 adapted to slide up and (1011 11 111 8 guideway l l attached to or forming part of the bracket 22. 2 5 I The crossheadB rests on a cam 50 secured to'the forward end of a shaft 51 journaled in suitable bearings arranged on the bracket v .a'cylinder 58 ofa horizontally disposed auxiliary reversing pump 60 mounted on the bracket 12. The reversing pump '60 is provided with a plunger 61 adapted to pump liquid fuel in one of the cylinders at the time the piston thereof is in a lowermost position to effect anexplosion in the said cylinder for reversing the engine, as hereinafter more fully explained, The plunger 61 is provided with a head 62 adapted to be engaged by a slidable member 3 extending diametrically in the pivot 57 as plainlyindicated in Fig. 5

The outer end of the slidable member 63 is adapted to be engaged by the free end 6 1 of an. arm 65 fulcrumed at 66 on a slide 67 mounted to reciprocate on a horizontal bearing 68 forming part of the bracket 12. The

i pivot 66 of the slide 67 is engaged by an eccentric rod 70 ofan eccentric 71-mormted to turn loosely on shaft ournaled insuitable bearings on the engine frame 13. The

[eccentric 71 is providedlwith a clutch member adapted to be engaged by a clutch member74 formed on a sprocket wheel 75 secured on the shaft 72. The sprocket wheel 75 is'connected by a sprocket chain 76 with a sprocket 7 7 on. the engine shaft 26 so that when the engine is running a rotary motion is given to the sprocket wheel 75 which by the clutch members 71, 73 rotates the eccentric 75 to impart a reciprocating motion to the slide 67. The arm 65 reciprocating with the slide 67 is provided near its free end 6 1 with a collar 80 resting on a support 81 attached to the bracket 12 and having a drop portion 82; Normally the free outer end of the slidable member 63 is out of the path of the free end 61 of the arm 65 and hence the pump 60 is not actuated during the normal running of the engine although the slide 67 continually reciprocates. The top of the arm 65 is pressed on by a spring 83 to hold the collar 80 in-contact with the support 81, and the said spring 83 is attached to a collar 8st held on a rod 85 erected on the base of the slide 67 tomove with the latter. The collar 8+1 rests on a spring 86 coiled on the rod 85, and a nut 87 screws on the upper end of the rod 85 to move the collar 81 downward whenever it is desired to increase the tension of the spring 83 on the arm 65.

The cam 56 previously mentioned is provided with a nose 90 adapted to be engaged by a crosspiece 91 pivoted at 92 on the head 62 of the plunger 61, and the said crosspiecc 91 is pressed on by a spring 93, and a similar spring 94: presses on a fixed crosspiece 95 permanently attached to the head 62 of the plunger 61. The springs 93 and 9 1- normally hold the plunger 61 in outward position relative to'its cylinder 60. Normally the pivoted cross piece 91 engages the nose 90, as shown in Figs. 1 and 6, but when an upward swinging movement is given to the handle 55 on raising the crosshead 4:3 by the operator actuating the handle 52 then the crosspiece91 snaps over the nose 90 to hold the pivot 57 temporarily locked against return movement. It is understood that the swinging movement of the crosspiece 91 to the right is limited by a shoulder 96 formed on the head 62 at the time the crosspiece 91 reaches a right-angled position relative to the axis of the plunger 61 (see Fig. 1).

The crosshead 4L3 is provided on the top with an upwardly extending screw rod 100, on which screws a nut 101 forming a seat for the lower end of a spring 102 abutting with its upper end against the bracket 12. The tension of the spring 102 can be regulated by correspondingly screwing the nut 101 up or down on the screw rod 100. By the use of the spring 102 the crosshead l3 is at all times held in contact with the peripheral face of the cam 50. To the crosshead 14: is attached a downwardly extending rod pivotally connected with a shifting lever 111 fulcrumed at 112 on the engine frame, and the said shifting lever 101 engages the shifting collar 113 of a governor 114 of any approved construction and having its shaft 115 driven from the engine shaft or other rotatable part of the engine. In case the speed of the engine increases beyond a. normal rate of speed then the governor 114 causes a liftingof the crosshead 43 whereby an outwardswin 'ing movement is given to the arms 16 and 1( by the links 10 and 4:1 so that the said arms move out of the path of the plungers 1 1 and 15 to miss the same and stop feeding of liquid fuel to the engine cylinders until the speed of the engine is reduced to normal speed, at which time the crosshead -13 is returned to normal lowermost position by the action of the governor 114. It will be noticed that by adjusting the nut 101 the action of the governor can be regulated when the engine is running to set the engine for predetermined speed.

'lheoperation is as follows:

When the several parts are in theposition shown in Figs. 1, 2 and 3, then liquid fuel is pumped alternately into the engine cylinders by the action of the pumps 10 and 11 to periodically efl'ect explosionsfor the run ning of the engine. lVhen it is desired to reverse the engine, it is only necessary for the operator to swing the handle 52 downward and then release it. The downward movement of the handle 52 causes 1 116 021111 to move the crosshead 13 upward, and in doing so the links 40 and tl swing the arms 16 and 17 outward out of the path of the plungers 1 1 and 15 to stop the action of the pumps 10 and 11. The downward swinging of the handle 52 causes an upward movement of the link 54: and a corresponding upward swinging movement of the handle 55whereby the pivot 57 is turned and the slidable member 63 is moved into the path ofthe free end 64 of the arm 65 reciprocating with the slide 67. During the movement fromflthe right to theleft given to the slidable mem ber 63 the plunger 61 is pushed in a like direction and consequently liquid fuel is pumped into the cylinder with which the pump 10 is connected at the time. This action takes place at the time the piston in the cylinder is in a lowermost position and consequently an explosion is effected to reverse the engine. During the upward swinging movement of the handle 5.) the nose 90 of f the cam 56 swings downward under the spring-pressed crosspieee 91 so that the latter swings onto the top of the nose 9.0 andthus temporarily locks the cam 56 and its handle 55 in an uppermost position. VVhenthe plunger 6].. is

pushed to the left the orosspiece 91 moves with it and finally moves out of engagement with the nose 9O thus raising the cam 56 after the plunger 61 has pumped the liquid fuel into the cylinder. As soon as the han-f dle is released the spring 102 forces the crosshead 4:3 downwardwhereby thelatter acts on the cam 50 and turns the latter back to normal position as shown in Fig. 1. This return movement of the cam 50 and its shaft 51 causes a downward movement of thelink 5 .1; whereby a downward swinging movement is given to the arm 55 and consequently the pivot 57 is turned and the slidable member 63 is moved out of the path of the free end G l-of the arm 65. When theplunger G1 is returned by the action of the springs 93 and 941 the crosspieceBlabuts against the nose 90 and the cam 56 remains unlocked.

From the foregoing itwill be seen that the pfun'ips 10 and 11 are actuated regularly unless the speed of the engineincreases beyond a normal rate of speed, and the pumps 10 and 11 are also rendered inactive when the handle 52 is swung downward for re versing purposes, atwhich time the pump combustion engine, comprising a main feed pump adapted tosupply the engine cylinder with llqlllCl fuel to perlodically effect explosions during normal runmng of the engine, a reversing pump adaptedto supply the said engine cylinder with fuel to effect an explosion for reversing the engine, independent actuating mechanisms driven from rotatable parts of the engine, one for actuatingthesaid main feed pump and the other the said reversingpump, connecting mechanism connected with both actuating inechanismsand under thecontrol of an operator to temporarily throw the actuating mechanism forthe main feedv pump out of action. and simultaneously throwing the actuating mechanism. for the reversing pump temporarily into action, and means connected with the said connecting mechanism 1 to return the actuating mechanisms to normal. running position after asingle pumping action of the 1-eversingpump.

2; A reversing mechanisn'i for an internal combustionengine, comprising a main feed pump having a spring-pressed plunger and adapted to supply the engine w1th liquid fuel to periodically efl'ect theexplosions in the engine cylinderdurmg normal running of the engine, a reversing pump having a spring-pressed plunger and adapted to supmy hs said enginecylin derwith fuel toeffect a single explosion for reversing the engine; a rocking leveractuated from a movable part of the engine, an arm pivoted on the said lever and adapted to actuate the plunger of the said main feed pump, a crosshead, a link connecting the crosshead withthe said lever arm, a cam lever con pump is thrown out of action.

3, A reversing mechanism for an internal combustlon engme, comprising a, main feed pump having a sprlng-pressed plunger and adapted to supply the engine with liquid fuel 'to periodically eflect the explosions in the engine cylinder during'normal running of the 15.

engine, a reversing pump having a springpress'ed plunger and adapted to supply the said engine cylinder with fuel to effect a single explosion for reversing the engine, a rocking lever actuated from a movable part of the engine, an arm pivoted on the said lever and adapted to actuate the plunger of ;the said engine feed pump, a erosshead, a link connecting the erosshead with the said lever arm, a cam lever controlling the said erosshead, an actuating mechanism driven from aemo'vable part of the engine, and con necting meansconnected with the said cam lever and'adapted to connect the said actuating mechanism with the plunger of the said reversing pump, I

skA reversing mechanism for an internal combustion engine, comprising a main feed pump having a spring-pressed plunger and adapted to supply the engine with liquid fuel to periodically effect the explosions in the engine cylinder duringnormal running of the, engine, .a reversing pump having a spring-pressed plunger and. adapted to supply the said engine cylinder with fuel to effect a single explosion for reversing the engine, a rocking lever actuated from a movablepart of the engine, an arm pivoted on the saidlever and adapted to actuate the plunger of the said main feed pump, a crosshead, a link connecting the erosshead with the said'lever arm, a cam lever controlling the said cross head, a slide reciprocated from a movable par'tof the engine, an arm pivoted on thesaid sllde and adapted to engage the sald plunger of the reversing pump,

-a cam lever engaging the said plunger of the reversing pump to hold the said plunger normallyout of reach of the said slide arm, and a link connecting the said cam levers with each other. i I

5. A reversing mechanism for internal combustion engines provided with an auxiliary reversing pump having a plunger, a

' pivot mountedto turn and provided with Copies of this patent may be obtained. for

a slidable member adapted to engage the said plunger, a reciprocating slide having an arm adapted to engage the said slidable .combustionengines provided with an auxiliary reversing pump having a plunger, a pivot mounted to turn and provided with a slidable member adapted to engage the said plunger, a reciprocating slide having an arm adapted to engage the said slidable member, a cam lever attached to the said pivot for tur ing the latter to move the said slidable member into or out of the path of the said slide arm, and a spring-pressed cross-piece pivoted on the said plunger and engaging the said cam lever.

7. A reversing mechanism for internal combustion engines provided with a main feed pump having a spring-pressed plunger, a rocking lever provided with a pivoted arm adapted to engage the outer end of the said plunger, a erosshead having movement in a plane approximately parallel to the axis of the plunger, a governor driven by the engine and connected with the said crosshead, and a link pivotally connecting the said erosshead with the said arm.

8. A reversing engine for an internal combustion engine provided with a main feed pump having a spring-pressed plunger, a rocking lever provided with a pivoted arm adapted to engage the outer end of the said plunger, a link pivoted at one end and pivotally connected at the other end with the said arm to hold the latter in. axial alinement with the said plunger on reciprocating the said rocking lever, a block slidable on the said rocking lever, an eccentric on the engine shaft and having its red connected with the said block, and a manually controlled eccentric having its rod pivotally connected with the eccentric rod of the other plunger, a erosshead, a governor driven by the engine and connected with the said crosshead, a link pivotally connecting the said erosshead with the said arm, a spring pressing the said erosshead, and means for adjusting the tension of the spring to adjust the said governor.

J OHANNES P. ULDERUP.

five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

